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Asphalt Calculator

Estimate asphalt volume in cubic feet and cubic yards from length, width, and compacted depth—with optional density for weight in pounds and tons.

Read the complete step-by-step guide

Calculator

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Results

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Formula

The Asphalt Calculator estimates hot-mix asphalt volume for a rectangular area from length, width, and compacted depth. Optional density converts volume into weight. Volume depth_ft = depth_in ÷ 12 cubic_feet = length_ft × width_ft × depth_ft cubic_yards = cubic_feet ÷ 27 Variables length_ft — paved length in feet width_ft — paved width in feet depth_in — compacted asphalt thickness in inches depth_ft — thickness converted to feet cubic_feet — asphalt volume in cubic feet cubic_yards — asphalt volume in cubic yards (typical ordering unit) Optional weight (when a density is selected) weight_pounds = cubic_feet × density_lb_per_cu_ft weight_tons = weight_pounds ÷ 2000 density_lb_per_cu_ft comes from the selected material density reference. If no density is chosen, only cubic feet and cubic yards are returned.

How to Calculate

How to calculate 1. Measure the paved rectangle in feet (length and width). 2. Enter compacted asphalt depth in inches (not loose lift thickness unless that is what you intend to order). 3. Review cubic feet and cubic yards. Divide larger jobs into rectangles and add results if the shape is irregular. 4. Optionally choose a density to estimate weight in pounds and tons for trucking or supplier quotes. Calculation notes Depth is converted from inches to feet before multiplying. Volume uses a rectangular prism (length × width × depth). Cubic yards divide cubic feet by 27. Weight is only calculated when density is provided. Practical tips Confirm compacted thickness with your paving plan—many driveways use about 2–4 inches of asphalt over a prepared base. Order a small surplus for edges and irregular spots. Supplier density can differ from reference values; use the density your plant provides when weight matters.

Examples

Example 1 — Small driveway pad Inputs: length 20 ft, width 10 ft, depth 3 in (no density). depth_ft = 3 ÷ 12 = 0.25 ft cubic_feet = 20 × 10 × 0.25 = 50 cu ft cubic_yards = 50 ÷ 27 ≈ 1.852 cu yd Result: 50 cubic feet (about 1.852 cubic yards) of asphalt. Example 2 — Longer driveway section Inputs: length 40 ft, width 12 ft, depth 4 in (no density). depth_ft = 4 ÷ 12 ≈ 0.333 ft cubic_feet = 40 × 12 × (4÷12) = 160 cu ft cubic_yards = 160 ÷ 27 ≈ 5.926 cu yd Result: 160 cubic feet (about 5.926 cubic yards). Split irregular layouts into rectangles and sum the volumes.

About this calculator

The Asphalt Calculator estimates hot-mix asphalt volume for driveways, pads, and rectangular paved areas. Enter length and width in feet plus compacted depth in inches to get cubic feet and cubic yards, and optionally apply density for weight.

Rectangular pave areas

Models a rectangular prism: length × width × depth. Split L-shaped driveways into rectangles and add the volumes.

Depth in inches

Enter compacted thickness in inches; the tool converts to feet before calculating volume and yards.

Optional weight

Choose a density reference when you need pounds or tons for trucking and plant orders.

Best for
  • Driveway paving
  • Parking pads
  • Patch area estimates
  • Supplier volume orders

Frequently asked questions

Quick answers about this calculator—how it works, accuracy, and everyday use.

Measure length and width in feet and compacted depth in inches. The Asphalt Calculator converts depth to feet, multiplies length × width × depth for cubic feet, then divides by 27 for cubic yards.

Use the compacted asphalt thickness from your plan—often about 2–4 inches for driveways over a prepared base. Enter inches; the tool converts to feet automatically.

Ready-mix and plant asphalt are commonly quoted by the cubic yard. Cubic feet ÷ 27 = cubic yards. Larger irregular areas can be split into rectangles and added together.

Select a density when you need pounds or tons for trucking or supplier tickets. Weight = cubic feet × density (lb/cu ft); tons = pounds ÷ 2000. If you only need volume, leave density blank.